MD Settings: indicate extension controlled search engines

chrome/browser/resources/settings/search_engines_page/search_engine_entry.html

 <link rel="import" href="chrome://resources/cr_elements/cr_action_menu/cr_action_menu.html">
 <link rel="import" href="chrome://resources/cr_elements/icons.html">
 <link rel="import" href="chrome://resources/html/polymer.html">
 <link rel="import" href="chrome://resources/html/icon.html">
 <link rel="import" href="chrome://resources/polymer/v1_0/paper-icon-button/paper-icon-button.html">
+<link rel="import" href="/controls/extension_controlled_indicator.html">
 <link rel="import" href="/search_engines_page/search_engine_dialog.html">
 <link rel="import" href="/search_engines_page/search_engine_entry_css.html">
 <link rel="import" href="/search_engines_page/search_engines_browser_proxy.html">
 <link rel="import" href="/settings_shared_css.html">
 
 <dom-module id="settings-search-engine-entry">
   <template>
     <style include="settings-shared search-engine-entry">
-      :host([is-default]) {
+      :host([is-default]) .list-item {
         font-weight: 500;
       }
 
       .name-column,
       .keyword-column {
         flex: 3;
       }
 
       .url-column {
         flex: 4;
         overflow: hidden;
         text-overflow: ellipsis;
         white-space: nowrap;
       }
+
+      :host(:not([show-dots_])) paper-icon-button {
+        pointer-events: none;
+        visibility: hidden;

[dpapad, 2016/12/01 19:02:15]

Does that ensure that the button can't be reached via the keyboard (by tabbing)?

[Dan Beam, 2016/12/06 02:32:12]

yes, AND fun fact: it also passes the a11y audit (sometimes the audit will
complain about things that are part of the tab order but are visually occluded
or something like that)

+      }
     </style>
 
     <template is="dom-if" if="[[showEditSearchEngineDialog_]]" restamp>
       <settings-search-engine-dialog model="[[engine]]">
       </settings-search-engine-dialog>
     </template>
     <div class="list-item">
       <div class="name-column">
         <span class="favicon-image"
             style="background-image: [[getIconSet_(engine.iconURL)]]"></span>
@@ skipping 10 matching lines @@
           $i18n{searchEnginesMakeDefault}
         </button>
         <button class="dropdown-item" role="option" on-tap="onEditTap_"
             hidden$="[[!engine.canBeEdited]]"
             id="edit">$i18n{searchEnginesEdit}</button>
         <button class="dropdown-item" role="option" on-tap="onDeleteTap_"
             hidden$="[[!engine.canBeRemoved]]"
             id="delete">$i18n{searchEnginesRemoveFromList}</button>
       </dialog>
     </div>
+    <template is="dom-if" if="[[engine.extension]]">
+      <extension-controlled-indicator
+          extension-id="[[engine.extension.id]]"
+          extension-name="[[engine.extension.name]]"
+          extension-can-be-disabled="[[engine.extension.canBeDisabled]]">
+      </extension-controlled-indicator>
+    </template>
   </template>
   <script src="search_engine_entry.js"></script>
 </dom-module>